What carpet shampoo can I use with my Kirby?

I have tried a few and none work....Do I have to buy the special (expensive) Kirby shampoo?? Please Help!!!!What carpet shampoo can I use with my Kirby?
I have a Kirby, and it is expensive, but the best thing about it is, you only need a little, it's that concentrated. I used to use Melaluca, which is excellent, but you have to sign up to be a member, or order from someone who is a member.What carpet shampoo can I use with my Kirby?
any, as long as it is made for a shampooer.
whats a kirby?
I have used woolmix, which works rather well. the trick is to get the carpet clean by using the powerhead first. then shampoo.


hope this helps